arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.08280physics.optics
收藏

作为Optical Fiber轨道Angular Momentum(OAM)模式内微扰的极化诱导相互作用

Polarization-Induced Interaction as a Perturbation within Orbital Angular Momentum(OAM) Modes of an Optical Fiber

Ramesh Bhandari

摘要:

我们研究了偏振效应在光纤轨道角动量模中的作用。具体来说,我们重新审视的$HE$和$EH$矢量模式,存在于弱引导近似(WGA)内的简并性的去除;在WGA内,这两个矢量模式合并成一个单一的空间(标量)轨道角动量(OAM)模式,由一个共同的拓扑电荷定义,并与左或右圆极化。虽然矢量波方程的极化项作为厄米微扰算子解释了$HE$和$EH$矢量模的分裂,但它的扩展解释了伴随的场校正,称为极化诱导场,遇到了障碍;这个场的特征是拓扑电荷的大小相差2。对这些问题进行了严格的审查,并提出了可能的补救措施及其影响。

英文摘要:

We investigate the role of polarization effects in orbital angular momentum modes of an optical fiber. Specifically, we revisit the removal of the degeneracy of the $HE$ and the $EH$ vector modes that exists within the weakly guiding approximation (WGA); within WGA, these two vector modes coalesce into a single spatial (scalar) orbital angular momentum (OAM) mode, defined by a common topological charge and associated with left or right circular polarization. While the polarization term of the vector wave equation acting as a Hermitian perturbation operator accounts for the splitting of the $HE$ and the $EH$ vector modes, its extension to explain the accompanying field correction, called the polarization-induced field, encounters hurdles; this field is characterized by a topological charge differing by two in magnitude. The problems are critically examined with a possible remedy and its implications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑